diff --git a/sys/modules/linux/Makefile b/sys/modules/linux/Makefile
index f761459d2bd9..ac5b30b19265 100644
--- a/sys/modules/linux/Makefile
+++ b/sys/modules/linux/Makefile
@@ -132,9 +132,9 @@ linux${SFX}_vdso.so: linux${SFX}_vdso.so.o
 	${STRIPBIN} -N _binary_linux${SFX}_vdso_so_o_size ${.TARGET}
 
 .if ${MACHINE_CPUARCH} == "amd64"
-linux${SFX}_support.o: linux${SFX}_assym.h assym.inc
+linux${SFX}_support.o: linux${SFX}_support.S linux${SFX}_assym.h assym.inc
 	${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
-	    ${.IMPSRC} -o ${.TARGET}
+	    ${.ALLSRC:M*.S:u} -o ${.TARGET}
 .endif
 
 linux${SFX}_genassym.o: offset.inc
diff --git a/sys/modules/linux64/Makefile b/sys/modules/linux64/Makefile
index f6f750e5216d..7d9929f7e14b 100644
--- a/sys/modules/linux64/Makefile
+++ b/sys/modules/linux64/Makefile
@@ -98,9 +98,9 @@ linux_vdso.so: linux_vdso.so.o
 	    linux_vdso.so.o ${.TARGET}
 	${STRIPBIN} -N _binary_linux_vdso_so_o_size ${.TARGET}
 
-linux_support.o: assym.inc linux_assym.h
+linux_support.o: linux_support.S assym.inc linux_assym.h
 	${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
-	    ${.IMPSRC} -o ${.TARGET}
+	    ${.ALLSRC:M*.S:u} -o ${.TARGET}
 
 linux_genassym.o: offset.inc
 	${CC} -c ${CFLAGS:N-flto:N-fno-common} -fcommon ${.IMPSRC}